Subtract 27/72 from 6/28
6/28 - 27/72 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
6/28 = 6 × 18/28 × 18 = 108/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
27/72 = 27 × 7/72 × 7 = 189/504 - Subtract the two like fractions:
108/504 - 189/504 = 108 - 189/504 = -81/504 - After reducing the fraction, the answer is -9/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/28-27/72 6/28-54/72 6/56-27/72 18/28-27/72 6/28-81/72 6/84-27/72 30/28-27/72 42/28-27/72